The quality of machine tool castings mainly includes appearance quality, internal quality and use quality. The appearance quality of machine tool castings to set machine casting surface roughness, surface defect, dimensions, shape, weight deviation deviation; the intrinsic quality of machine casting machine casting mainly refers to the chemical composition, physical properties, mechanical properties, microstructure and exist in the machine tool casting internal holes, cracks and inclusions, segregation etc.;
The quality of machine castings refers to the working durability of machine castings under different conditions, including wear resistance, corrosion resistance, chilling, heat shock, fatigue and shock absorption, as well as machinability and weldability. The quality of machine tool castings has a great influence on the performance of mechanical products. For example, the wear resistance and dimensional stability of the machine tool castings directly affect the accuracy of the machine tools.
